From d78a4850a6c480a486fec7341dac3212166ec65c Mon Sep 17 00:00:00 2001
From: rubidium <rubidium@openttd.org>
Date: Fri, 9 Sep 2011 17:46:21 +0000
Subject: (svn r22912) -Fix [FS#4753]: another attempt at fixing a related
 crash (can't reproduce it though)

---
 src/ai/ai_scanner.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src/ai')

diff --git a/src/ai/ai_scanner.cpp b/src/ai/ai_scanner.cpp
index 8b30e8c9f..df989630f 100644
--- a/src/ai/ai_scanner.cpp
+++ b/src/ai/ai_scanner.cpp
@@ -424,8 +424,8 @@ static bool IsSameAI(const ContentInfo *ci, bool md5sum, AIFileInfo *info)
 
 	AIFileChecksumCreator checksum;
 	const char *tar_filename = info->GetTarFile();
-	TarList::iterator iter = _tar_list.find(tar_filename);
-	if (iter != _tar_list.end()) {
+	TarList::iterator iter;
+	if (tar_filename != NULL && (iter = _tar_list.find(tar_filename)) != _tar_list.end()) {
 		/* The main script is in a tar file, so find all files that
 		 * are in the same tar and add them to the MD5 checksumming. */
 		TarFileList::iterator tar;
-- 
cgit v1.2.3-54-g00ecf